Surveillance is French, and English means "eye in the sky", which means "tracking" and "monitoring" are like "an eye in the sky". To "see" and "write down everything you see", not following the cold shoulder will affect your judgment, and excessive expression of your feelings will lead to danger ... The tracking team of the Criminal Intelligence Bureau is commonly known as the police "paparazzi". They are like "eyes in the sky", looking on coldly and turning the collected clues into the key to solving the case. "Paparazzi" captain Huang (Yam Tat-wah) leads the newcomer He Jiabao (Xu Zishan) and several team members, who are tracking a jewel robbery suspect. Their stalker, Chen Chongshan (Tony Leung Ka Fai), has planned many robberies, and he is extremely alert to the police, just as he can sense the appearance of any policeman around him, so that he has successfully evaded the police many times. Chen Zhongshan's alertness has become a big problem for Huang and others. Although Skynet has been restored and the monitoring network of "paparazzi" is tightening up to Chen Chongshan step by step, Chen Chongshan's actions are always beyond their expectation. In the busy downtown area of Hong Kong, a cat-and-mouse game is going on endlessly ... The skynet is long, and Chen Zhongshan finally falls into the tracking network of paparazzi, but the caution of the mountain has become a problem for paparazzi, and ordinary paparazzi have also become the death hole of the mountain. ...